Steam-generator.



PATENTBD DEC. 4, 1906.

L. G. BUGBEB. STEAM GENERATOR.

APPLIOATIONIILED JAN. 30; 1906, Y

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LOUIE G. BUG-BEE, OF POLO, ILLINOIS.

STEAM-GENERATOR.

Specification of Letters Patent.

Patented Dec. 4, 1906.

Application filed January 30, 1906. Serial No. 298.710.

T0 all whom, it may concern:

Be it known that I, LoUrE G. BUGBEE, a citizen of the United States,residing at Polo, in the county of Ogle and State of Illinois, haveinvented new and useful Improvements in Steam-Generators, of which thefollowing is a specification.

My invention pertains to steam-generators; and it contemplates theprovision of a simple, compact, and highly-efficient semiflash generatordesigned more particularly for use in motor-vehicles and interurb an carservice or where large capacity and small space is required.

The invention will be fully understood from the following descriptionand claims when the same are considered in connection with theaccompanying drawings, forming part of this specification, in which-Figure l is a view, partly in elevation and partly in vertical section,of the generator constituting the present and preferred embodiment of myinvention. Fig. 2 is an enlarged detail section illustrating one of thewater-tubes and the circulating-tube therein.

Similar letters designate corresponding parts in both views of thedrawings.

Referring to the drawings, A is the jacket or case of the generator.This jacket or case is designed to contain in its lower portion aburner, which l have deemed it unnecessary to illustrate, and isprovided at its top with v an outlet a for smoke and other products ofcombustion.

B is a shell located in the upper portion of the jacket or case A. Thesaid shell is preferably made up of upper and lower sections b c, ofcast-steel or boiler-steel, and bolts (l, connecting said sectionstogether, and it is preferably supported in the jacket or case throughthe medium of leg-brackets O, which extend upwardly inside of the jacketor case and have inturned arms at their upper ends connected by thebolts d and outturned arms at their lower ends extending through thejacket or case, as shown, and designed to be arranged on and connectedto supports. (Not illustrated.)

D D are water-tubes, which vary in number with the size of thegenerator. These water-tubes D have upper open ends exteriorly threadedand screwed into apertures in the bottom of the shell B and also havelower ends, which are preferably closed by welding and are provided withflat surfaces, as indicated by e, so that an ordinary wrench is the thedownward flow of the cool water.

only tool necessary to connect the watertubes to or disconnect saidtubes from the shell B.

E is a water-tube having superposed coils surrounding the water-tubes D.At one end the said tube E is designed to be connected with a feed-pipeF, which extends outside the jacket or case, and at its opposite andlower end the tube is connected to the lower portion of one of thewater-tubes, as indicated by f in Fig. l.

G G are circulating-tubes disposed in the water-tubes and extending froma point adjacent to the lower closed ends of said watertubes to a pointabove the upper ends thereof. These circulating tubes are open at theirlowerand upper ends and are provided at the latter ends with funnels gto facilitate Said circulating-tubes are also provided with tapered iinsor wings h, which rest in the upper ends of the water-tubes D, andthereby support the circulating-tubes in the watertubes withoutinterfering with the passage of 'water from the water-tubes to the lowerportion of the shell B.

H H are upright tubular staybolts which extend through the shell B andare open at their lower and upper ends for the upward passage of heatedgases and other products of combustion. These stay-bolts H have exteriorly-threaded lower ends turned into correspondingly-thmadedapertures in the lower wall of the shell B, while their upper portionsextend through apertures in the upper wall of said shell and are fixedin position through the medium of jam-nuts 7c Z, disposed above andbelow the upper wall, as shown. It will thus be seen that there is noliability of the stay-bolts being displaced while the generator is inuse, and yet when it is necessary for any reason to remove one of thebolts and replace it with a new bolt the same may be readilyaccomplished without affecting the other bolts.

l is a dry plate arranged in the shell B and dividing the same intolower and upper chambers, the upper chamber being designed to containdry and superheated steam, the water-level being in the lower chamber.The said dry plate is preferably secured between the meeting portions ofthe shell-sections and is provided with apertures m for the passage ofthe hollow stay-bolts H, the said apertures being larger than thestay-bolts in about the proportion shown, so as to permit IOO IIO

steam to pass from the lower water-chamber of the shell to the Aupperchamber thereof and assure the steam being superheated by the stay-boltsor iire-tubes before it enters the upper or dry chamber of the shell.

In the practical use of the generator it will be apparent that watersupplied to the tube E will pass through the several coils thereofbefore it passes into the generator at the lower end of one of thewater-tubes D thereof. It will also be apparent that water will occupythe tubes D and G, as wellas the lower chamber of the shell of thegenerator, rand i will circulate down through the tubes G and passupwardly in the tubes D, with the result that the conversion of thewater into steam will be materially accelerated. It will further beapparent that the steam contained in the lower chamber of the shell Bwill be superheated by the flames and heated gases passing upwardlythrough the stay-bolts H and will be further superheated by reason of itbeing brought into close contact with the stay-bolts H incident to itspassage from the lower chamber of the shell to the upper or dry chamberthereof.

It will be gathered from the foregoing that notwithstanding thesimplicity and compactness of my novel generator and the facility withwhich the said generator may be repaired when necessary the same ispossessed of great capacity in proportion to its size and is thereforewell adapted for use in motorvehicles and interurban car ser vice.

I claiml. A steam-generator having a vshell comprising lower and uppersections provided with apertured lugs arranged directly on each otherthe lower section being also provided with screw-tapped apertures in itsbottom wall and the upper section being also provided with apertures inits top wall, in combination with brackets, bolts extending through andconnecting the lugs of the shellsections together and to the bracket-s,a dryplate secured in the shellbetween the sections thereof and havingapertures, tubular staybolts extending through said apertures of the drvplate and open at their ends and having exteriorly-threaded lower endsoccupying apertures in the bottom wall of the lower shell-section andalso having exteriorlythreaded upper portions extending through `theapertures in the top Wall of the upper shell-section, jam-nuts mountedon said upper portions and disposed below and abo ve the top wall of theupper shell-section, and

water-tubes open at their upper ends and having their upper endsexteriorly threaded to engage threaded apertures in the bottom wall ofthe lower shell-section.

2. In a steam-generator, the combination of'a jacket, leg-bracketsresting inside' the' jacket and having inturned arms at their upper endsand outturned arms at their lower ends; the latter arms extendingthrough the jacket and being designed to rest on supports, ashellarranged in the upper portion of the j acket'and comprisingsections ha ving apertured lugs, bolts connecting the lugs of theshell-sections together and to the upper arms of the leg brackets, a dryplate secured between the shell-sections, iire-tubes extending throughthe'shell and the dry plate'and open at their lower and upper ends,watertubes communicating with and depending from the shell,circulating-tubes arranged in the water-tubes and open at their lowerand upper ends, and a water-tube connected at one end to the lowerportion of one watertube and having coils surrounding the severalwater-tubes.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

LOUIE G. BUGBEE.

